Grooved Reducing Flexible Coupling
  • Grooved Reducing Flexible Coupling
  • Grooved Reducing Flexible Coupling
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    Grooved reducing flexible coupling is a pipe fitting made of ductile iron. It features a flat-bolted housing structure with a certain gap between the joint and the groove base, allowing for flexible connections and the ability to accommodate axial displacement and angular deflection. The grooved reducing flexible coupling can replace two separate couplings and one reducer fitting.

    Recommended applications

    Grooved reducing flexible coupling can be used for various pipelines, such as sewage pipes, water supply pipes, etc.

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    Key Specifications
    • Available sizes
      Available sizes: 1 1/4×1 inch~8×6 inch |DN32×25~DN200×150
    • Working pressure
      Working pressure: 300PSI/2.07MPa
    • Certificate
      Certificate: UL/CE certified
    • Coating
      Coating: epoxy/galvanized
    • Color
      Color: red/orange/white, etc.
    • Material
      Material: ductile iron
    Specifications
    Nominal Size Pipe OD Dimensions Bolt Size
    mm/in mm/in mm/in No.-Size mm
    A B C
    50x32 / 2x1 1/4 60.3x42.4 / 2.375x1.660 86 / 3.39 125 / 4.93 44 / 1.74 2-3/8x55 / 2-M10x57
    50x40 / 2x1 1/2 60.3x48.3 / 2.375x1.900 86 / 3.39 125 / 4.93 44 / 1.74 2-3/8x55 / 2-M10x57
    65x40 / 2 1/2x1 1/2 73.0 x 48.3 / 2.875x1.900 96 / 3.78 136 / 5.35 45 / 1.78 2-3/8x55 / 2-M10x57
    65x50 / 2 1/2x2 73.0x60.3 / 2.875x2.375 96 / 3.78 136 / 5.35 45 / 1.78 2-3/8x55 / 2-M10x57
    65x50 / 2 1/2x2 76.1 x60.3 / 3.000x2.375 102 / 4.02 140 / 5.51 45 / 1.78 2-3/8x55 / 2-M10x57
    80x40 / 3x1 1/2 88.9x48.3 / 3.500x1.900 115 / 4.53 158 / 6.22 45 / 1.78 2-1/2x70 / 2-M12x70
    80x50 / 3x2 88.9x60.3 3.500x2.375 115 / 4.53 158 / 6.22 45 / 1.78 2-1/2x70 / 2-M12x70
    80x65 / 3x2 1/2 88.9x73.0 / 3.500x2.875 115 / 4.53 158 / 6.22 45 / 1.78 2-1/2x70 / 2-M12x70
    80x65 / 3x2 1/2 88.9x76.1 / 3.500x3.000 115 / 4.53 158 / 6.22 45 / 1.78 2-1/2x70 / 2-M12x70
    100x40 / 4 x1 1/2 114.3x48.3 / 4.500x1.900 142 / 5.59 192 / 7.56 50 / 1.97 2-1/2x70 / 2-M12x70
    100x50 / 4x2 114.3x60.3 / 4.500x2.375 142 / 5.59 192 / 7.56 50 / 1.97 2-1/2x70 / 2-M12x70
    100x65 / 4x2 1/2 114.3x73.0 / 4.500x2.875 142 / 5.59 192 / 7.56 50 / 1.97 2-1/2x70 / 2-M12x70
    100x65 / 4x2 1/2 114.3x76.1 / 4.500x3.000 142 / 5.59 192 / 7.56 50 / 1.97 2-1/2x70 / 2-M12x70
    100x80 / 4x3 114 3x88.9 / 4.500x3.500 142 / 5.59 192 / 7.56 50 / 1.97 2-1/2x70 / 2-M12x70
    150x80 / 6x3 165.1x88.9 / 6.500x3.500 200 / 7.87 250 / 9.84 50 / 1.97 2-5/8x85 / 2-M16x85
    150x100 / 6x4 165.1 x114.3 / 6.500x4.500 200 / 7.87 250 / 9.84 50 / 1.97 2-5/8x85 / 2-M 16x85
    150x80 / 6x3 168.3x88.9 / 6.625x3.500 202.5 / 7.97 252 / 9.92 50 / 1.97 2-5/8x85 / 2-M16x85
    150x 100 / 6x4 168.3 x 114.3 / 6.625x4.500 202.5 / 7.97 252 / 9.92 50 / 1.97 2-5/8x85 / 2-M16x85
    200x150 / 8x6 219.1 x 165.1 / 8.625x6.500 257 / 10.12 322 / 12.68 56 / 2.2 2-3/4x115 / 2-M20x 115
    200x150 / 8x6 219.1x168.3 / 8.625x6.625 257 / 10.12 322 / 12.68 56 / 2.2 2-3/4x115 / 2-M20x115
    What are the advantages of grooved piping systems in the fire protection industry?
    In the fire protection industry, especially in automatic fire sprinkler piping systems, grooved connections are commonly used. The biggest advantages of this type of connection are faster and more economical installation, higher reliability after installation, and lower maintenance costs.
    What are the advantages of flexible coupling?
    • Compared to traditional connection methods such as welding, threading, and soldering, flexible couplings offer faster and safer installation, and reduced cost.
    • Unlike traditional pipe connection methods (such as welded or soldered joints), flexible couplings do not generate dust pollution or product contamination.
    • Reducing flexible couplings can directly connect pipes of different sizes that allows for direct size reduction and eliminates the need for a reducer + two separate couplings.
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